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Optimal discrimination between overcomplete states

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5 Author(s)
Clarke, R. ; Dept. of Phys. & Appl. Phys., Strathclyde Univ., Glasgow, UK ; Kendon, V.M. ; Riis, E. ; Barnett, S.M.
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Summary form only given. We show how to discriminate between overcomplete sets of quantum states with minimum error probabilities. It is not possible to distinguish reliably between non-orthogonal states, but given a specific set of N states (N>2 for a two-state system) one can ask how well can they be distinguished. The answer is different depending on whether you want the minimum error, or the maximum information.

Published in:

Quantum Electronics Conference, 2000. Conference Digest. 2000 International

Date of Conference:

10-15 Sept. 2000

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